#*************************************************************************** #*************************************************************************** # File version for 'aclocal' use. Keep it a single number. # serial 7 dnl CURL_OVERRIDE_AUTOCONF dnl ------------------------------------------------- dnl Placing a call to this macro in configure.ac after dnl the one to AC_INIT will make macros in this file dnl visible to the rest of the compilation overriding dnl those from Autoconf. AC_DEFUN([CURL_OVERRIDE_AUTOCONF], [ AC_BEFORE([$0],[AC_PROG_LIBTOOL]) # using curl-override.m4 ]) dnl Override Autoconf's AC_LANG_PROGRAM (C) dnl ------------------------------------------------- dnl This is done to prevent compiler warning dnl 'function declaration isn't a prototype' dnl in function main. This requires at least dnl a c89 compiler and does not suport K&R. m4_define([AC_LANG_PROGRAM(C)], [$1 int main (void) { $2 ; return 0; }]) dnl Override Autoconf's AC_LANG_CALL (C) dnl ------------------------------------------------- dnl This is a backport of Autoconf's 2.60 with the dnl embedded comments that hit the resulting script dnl removed. This is done to reduce configure size dnl and use fixed macro across Autoconf versions. m4_define([AC_LANG_CALL(C)], [AC_LANG_PROGRAM([$1 m4_if([$2], [main], , [ #ifdef __cplusplus extern "C" #endif char $2 ();])], [return $2 ();])]) dnl Override Autoconf's AC_LANG_FUNC_LINK_TRY (C) dnl ------------------------------------------------- dnl This is a backport of Autoconf's 2.60 with the dnl embedded comments that hit the resulting script dnl removed. This is done to reduce configure size dnl and use fixed macro across Autoconf versions. m4_define([AC_LANG_FUNC_LINK_TRY(C)], [AC_LANG_PROGRAM( [ #define $1 innocuous_$1 #ifdef __STDC__ # include <limits.h> #else # include <assert.h> #endif #undef $1 #ifdef __cplusplus extern "C" #endif char $1 (); #if defined __stub_$1 || defined __stub___$1 choke me #endif ], [return $1 ();])])